With the ability to lift up to 8 tonnes, the UNIC URW-806-3 reaches a maximum hook height of 27.8 metres — an extra 5 metres over the standard URW-706 — thanks to its additional hydraulic jib / searcher hook, giving that extra reach for tricky lifting projects. The crane can be controlled from the operator's driving seat or by a fully functional radio remote control for precise placement of loads. The optional Bellypack radio remote offers operators unrivalled control and precision.
Key Features
- 8 tonnes lifting capacity — at 1.7m radius — highest capacity-to-width ratio in the UNIC indoor range
- 27.8m maximum hook height — with fixed hook on the hydraulic fly jib
- 1000kg hydraulic fly jib — with searcher hook option and 0°/20°/40°/60° tilt angles
- 6-fall rope option — 17.7m rope at 8 tonnes for heavy short-rope lifts
- Industrial doorway access — 1.67m wide for indoor sites and double-doorway access
- Optional Bellypack radio remote — ergonomic body-mounted remote for unrivalled operator control
Technical Specifications
| Specification |
Detail |
| Crane capacity |
8.0t × 1.7m (6.0t × 3.0m) |
| Max working radius |
18.6m (21m with hydraulic fly jib) |
| Max lifting height |
19.5m (25.2m with hydraulic fly jib, 27.8m with fixed hook) |
| Boom length |
4.80 – 19.20m (6 section) |
| Folded dimensions (L × W × H) |
5610 × 1670 × 2185mm |
| Unladen weight |
8520kg (8670kg with electric option) |
| Rope length |
17.7m (6 fall) / 23.75m (4 fall) / 49.5m (2 fall) / 101m (1 fall) |
| Engine |
Kubota diesel, 18.5kW |
| Electric motor |
7.5kW @ 400V AC |
| Hydraulic jib |
1000kg single line / 850kg searcher, 6.0m / 7.5m, 530kg, 0°/20°/40°/60° tilt |
| Track width |
400mm |
| Travel speed |
0 – 2.9km/h (2-speed hydrostatic) |
Specifications above are taken from the UNIC manufacturer's spec sheet at standard configuration. Variants with electric, LPG or other options may differ slightly — full rated capacity charts supplied with each hire.
UNIC Cranes | LOLER Compliant | Hire from WOLFF Onsite
This UNIC mini spider crane is supplied by WOLFF Onsite for hire across the UK. All cranes are LOLER-tested and supplied with a current Report of Thorough Examination. UNIC has been manufacturing mini spider cranes for over 50 years and is the original spider crane brand — the patented stability protection, intelligent voice warning system and computer-controlled moment limiter set the safety benchmark for compact lifting. Operator training, on-site delivery and full technical support are available — contact our team to discuss your project.
More About This Product
With the ability to lift up to 8 tonnes, the UNIC URW-806-3 is able to lift to a maximum hook height of 27.8 metres — an extra 5 metres more than the standard URW-706 model. This additional hydraulic jib / searcher hook makes it a truly versatile machine and provides that extra reach for tricky lifting projects. The URW-806-3 can be controlled from the operator’s driving seat or by a fully functional radio remote control for precise placement of loads. The optional Bellypack radio remote control offers operators unrivalled control and precision.
Suitable Applications
The URW-806-3 is the heaviest-lifting industrial-doorway UNIC. Used for major plant installation in power stations and data centres, structural steelwork in industrial buildings, marine internal fit-out, stadium construction, and any indoor 8-tonne lift. The 27.8m hook height extends the use case to tall atria and multi-storey internal lifts that would otherwise require external crane access.
Spider cranes are chosen for access rather than capacity — they pass through doorways and work indoors where a mobile crane cannot. Capacity depends entirely on outrigger spread and ground bearing, so work from the load chart for the configuration achievable on site. See also lifting beams and slings for the rigging below the hook.
How to Set Up and Operate the URW-806-3
- Survey the working area, verify ground bearing capacity against the published point loadings and confirm overhead clearances are sufficient for the proposed boom geometry.
- Track the crane into position using the operator's seat or radio remote. Ensure the chassis is on firm, level ground or that load-spreader mats are deployed.
- Deploy the outriggers to the configuration required by the lift plan — set each outrigger angle and extension, ensuring stabiliser pads make full contact with the ground.
- Level the crane using the bubble level / auto-level system and verify all outrigger interlocks are engaged before luffing the boom.
- Configure the rope reeving (1-fall, 2-fall, 4-fall or 5/6-fall as applicable) to match the planned load and required rope length.
- Set any working area, slew or height limits required by the lift plan via the safe load indicator interface.
- Carry out a function test, confirm the moment limiter and voice warning system are operational, then lift to working position and complete the lift in accordance with the lift plan.
- On completion, return the boom to the stow position, retract outriggers and secure the crane for transit or overnight parking.
Warning:
Spider cranes must only be operated by CPCS / NPORS / equivalent-certified operators working to an approved lift plan. Never exceed the rated capacity at the relevant radius shown on the load chart. Power source: Diesel + Optional 400V Electric.
Safety Information
- The crane must only be operated by competent, trained and certified operators familiar with this specific UNIC model.
- A documented lift plan, prepared by an Appointed Person, is required for every lifting operation under LOLER 1998.
- Ground conditions must be assessed against the manufacturer's point loadings — supplied on request — before each lift.
- Outriggers must be deployed to a configuration that supports the planned load at the planned radius; mixed-extension configurations require a competent rating check.
- Never operate the crane outside the rated load chart, override the safe load indicator, or carry loads with the boom in an unintended configuration.
- Carry out daily pre-use checks of hooks, wire ropes, hydraulics, safety devices and the moment limiter prior to first lift each shift.
Inspection and Maintenance
Spider cranes must be subject to a Thorough Examination by a Competent Person at least every 12 months under LOLER 1998, with additional 6-month examinations required where the crane is used to lift persons. Daily pre-use checks should cover wire rope condition, hook and shackle integrity, hydraulic system, outrigger pads, tracks, safety devices and the safe load indicator. All WOLFF Onsite hire cranes are supplied with a current Report of Thorough Examination and full service history. Defects identified in service must be reported immediately and the crane taken out of use until repaired.
Frequently Asked Questions
Q: Can the URW-806-3 be operated indoors?
Yes, with the right power option. The URW-806-3 is available with an integrated electric option that allows clean, quiet operation suitable for indoor work, occupied buildings and low-emission zones. Engine-only configurations should be used outdoors or in well-ventilated areas only.
Q: Do I need a trained operator to use this crane?
Yes. All
spider cranes must be operated by a competent, trained and certified operator (typically CPCS or NPORS certified). WOLFF Onsite can supply operated hire or arrange operator training as part of the package — please contact us for details.
Q: Is the URW-806-3 available for short-term and long-term hire?
Yes. WOLFF Onsite offers daily, weekly, monthly and project-length hire for the full UNIC URW range. Contact us with your project dates, lift plan and site address for a tailored quotation including delivery, off-load and operator if required.
Q: What are the point loadings I need to consider?
Spider crane point loadings vary with boom angle, radius and outrigger configuration, so they are supplied on a per-project basis. Provide your lift plan and proposed setup position and we will supply the relevant point loading data for ground bearing assessment.
